Dustless batcher



G. O. HARM DUSTLESS BATCHER Oct. 28, 1930.

Filed June- 20, 192 v 3 Sheets-Sheet l Oct; 28, 1930. G, Q HARM 1,779,734

DUSTLESS BATGHER Filed June 20, 1928 3 Sheets-Sheet 3 Patented Oct. 1930 I it Y I W in UNITED STAT-ES PATE NT O FFl-C-E 7 i GEORGE otnainvr, or wAa-ann -onror 1 i i' i i i i D s'rLEss nATo Ea o ncat'ion'fii a' .runeao, 192s: Sendin /gamma. v p The present invention relates 'to batchers, types. A's shown,'the improvements areem such as are employed for discharging or de: bodied" in a Weighing batcher which comlivering batches of cement or other line mar prises the bin? having the hopper bottom 8,, terial, and aims to provide a dustless batcher the cement or other material being delivered which will eliminate the discharge of dust intothe bin through the-chute 9 fro1nan ele into the air during the operation ofthe vator (not shown) v r V I .batcher. w i *A weighing chamber 11 is suspended by In the use of cement and similar batchers, the weighing mechanism'12 under the spout when the cement or other powdered material 10 of the hopper 8, anda slide valve or gate 10 drops from the bin into the weighing or 13 moves snugly under the spout 10=to conto measuring chamber, the displaced air in such trol the flow of material from the hopper" chamber forces streams of dust from the into the chamber 11. A neck 14 is disposed chamber out of every opening that exists. snugly under the gatel3 at the. upper end of This dust discharges into the air and settles the chamber, and the chamber has a lower 5' on the surrounding property, and is even discharge gate '15. with suitable latching blown by the wind to adjoining properties means 16'. v I i I so as to constitute a nuisance. Attempts T'he'bat'cher'as described up'tothispoint is have been made to prevent the discharge of of well known construction, for delivering dust by draping bags or canvas-overthe batches ofcementor similar material o'f pre-' 2 openings, but this'method has been "unsatis determined weight, the gate 13, after being factory, and such-plan is'not only an incon opened, being controlled by "the weighing venience,but also results in loss of material. mechanismin order that said gate will be In order to eliminatethe-dischargeof dust closed when the material flowing from-the into the air or to the surrounding property, hopper'into the chamber reaches a predeter- 25 it is the object of the invention to provide mined weight in saidchambe'r. The gate 15 7.5

v the batcher with a vent through which the is then opened to deliver-thebatch ofmateair and dust maypass, Without leaving 'the rial fromthe chamber ll to a"wagon,-*truck-, batcher, and the weighing or measuring or other suitablereceiver. I v I r chamber may be'made air-tight otherwise. In carrying out the invention, 'a bellows 30 Another object ofthe invention is to abor diaphragm 17 of cloth, leather,-or'o'ther complish' the aforesaid results in a simple, suitable flexible material, is secured to the inexpensive, practical and efficient manner. adjacent edges-of the chamber 11 and neck 14, lithathe foregoing dfitherxo jects in thereby closing the space between 'thenp'per view, which will be apparent as the descripend'of said chamber and said'neck,'so that'the tion Proceeds thelnVQntiOn resides in e air and dust cannot blow between them." i construction a m i 9 B as Aventpipe 18 is connected to the chamber v116mmafter descllbsdr d l md 1t hem 11 at one side near the upper end therof,and understopd h h r b i madewlthm has afu'nnel or enlargement 19 receivin the the scope'of What 18 clalmediwlth-out depart," lower end of a vertical vent pipe 20 'tha t ex- 40 'i i fg g s ace-01m tends upwardly through the hopper 8 into the m 3 drawingsupper portion of the bin 7. A bellows or Fo i 1 i zl elevation of a Weighing diaphragm 21 is secured to thelower termib fi embdyino. the improvement; i nal of the pipe 20 and'therim of the funnel 45 Fi 2 is an enlarged vertical section on enlargement), to (31056 thefslulcie tw n the f Fig them,and theupper end of the p pe 20 1s d1- Fig. 3 is a side elevation of a different type fi d y; to h? of batcher plant embodying the invention. dust from the p pe downwardlyzmto theabin.

The improvements may be embodied in The bellows ordiaphragms 17 and 2lnot 50 either weight or volum batchers of various only-close the corresponding spaces, butalso L when the gate '13 is openedl The displaced air flows up through the pipes 18, 20 and the dust is delivered'down wardly into the bin under theroof thereof, so:

that the dust may settle down in the bin. The

dust is confined within the bin and cannot Moreover, the mater al escape therefrom. flowing from the bin lnto thechamber 11 will create an enlargement of the air. space within the bin, sot-hat there is a tendency to create a sub-atmospheric pressure within the upper portion of the bin so that this air suction assists in drawing theairand dust remen; chamber 11 through the pip esflS,QO int the bin. The pipes ls, 20 thus equalizesthe air pressures in the bin and chamber. I YVhen the gate 13is closedandthe gate 15 opened, thematerial drops from the chamher, and this creates an. air suction or subatmospheric pressure within the chamber, but the air flowing from thebin throughthe pipes 18, 20 into the chamber ll will relieve the suction, so that the material may. drop from the chamber with less agitation than if the entrance ofair into the is rer t V I he bin 7 shownin Fig. 3 has the. filling opening 23 inthe top thereof, which may be normally closed by a suitable door or cover, down which a bucket 2e may be lowered, to dump the cement or other material into the bin. The bucket 24 may beused for transporting the cement from the cement mill'in large quantities, instead of handling the cement in bags as usual, and the bucket 24 i has a drop bottom 25 that may beopened for dumping the cement into the bin.

The bucket 24 is lifted from a truck by a cable 26 which pases over a pulley block27 suspended from a trolley 28 that moves on a rail 29. secured to the upper end 'ofthe frame 31 which carries the bin 7,, and the outwardly projecting portion of the rail is supported by a column 32 disposed at one side of the frame 7 so that the truck carrying the bucket may move between said column and frame. The

cable 26 passes over a'pulley block 33 sus pended from the outer end of the rail 29, and a second cable 34 passes over pulley blocks 35 and 36 at the inner and outer ends of the rail 29 and is connected to the trolley 28.

WVhen the cable 26 is connected to the bucket '24 carried by the truck, the cable 26 is pulled to raise the bucket, and the cable 34 is then pulled so as to move the bucket inwardly with thetrolley 28 to'a position above the bin. The cable 26 is then slackened to 25 of the bucket is then opened to discharge the material into the bin. The cable 26 is then pulled to again raise the bucket and cable 34is then pulled in the reverse direction to pull the bucket and trolley outwardly, after which the cable 26 is slackened to lower the bucket back to the truck. The rail 29 has st-ops37 and 3 8 to limitithe inward and out- I ward movements of the trolley 28.

In this construction, the pipe 20 is offset to onesideso as. not tointerfere with the movement of the bucket 24 into the bin.

Having thus described the invention, what is claimed as new is z 1. A batcher c'omprising a bin, a vertically movable chamber below the bin to, receive material therefrom, agate movable mider the bin, a neck undersaid gate, a bellows connecting. said neck and upper portion of said chamber, and a vent for said chamber e2 tien ding into the bin. l

2. A batcher comprising a bin, a vertical; ly movable chamber below the binto receive material therefro-m'fand a vent jcomprising relatively movable pipes, one connected to said chamber and :the other extending into thebin p 3. A batcher comprising a bin, a vertically movable chamber below the binto receive material therefrom, a vent pipe connected to said chamber, a vent pipe extending into the bin,-and a bellows connection between said pipes. l f. f!

4. A batcher, comprising a bin for pow; deredmaterial and having adischarge outl a mt o ,Mhmberbenw said outlet to receivethe powered material from the bin, a cut-off gate movableunder said outlet, and a vent for said chamber e1 2, tending into the bin for the flow of air and dust from thechamber into the bin. 5. A batcher comprising a binfor powdered material and having a discharge outlet at the bottom thereof, a chamber below said outlet to receive the powdered material from the bin, a. cutoff gate movable under said outlet, and a-vent' conduit connected to the upper. portion of said chamber and extending upwardly into thebini to theupper portion chamber into the bin.

6.,Abatchercomprising a bin for powdered material and having a lower discharge outlet, a neck below} said outlet, a I shut-off gate movable betweensaid outlet audfneck, a vertically movable chamber below said neck and havinga lower discharge gate, and.

.a bellows connecting said neck and chamber.

In testimony whereof I hereunto afiix my signature. V

GEpRGEOg HARM lower. the bucket into the bin, and the bottom 

